Carnegie stage 23
Introduction
Facts
Week 8, 56 - 60 days, 27 - 31 mm
Events
Ectoderm:
Mesoderm: ossification continues
Head: eyelids, external ears, rounded head
Body: straightening of trunk, intestines herniated at umbilicus
Limbs: hands and feet turned inward
Features
scalp vascular plexus, eylid, eye, nose, auricle of external ear, mouth, sholder, arm, elbow, wrist, toes separated, sole of foot, umbilical cord Labelled Stage 23
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Kyoto Collection
View: This is a dorsolateral view of embryo. Amniotic membrane removed.
Image source: Embryology page Created: 19.03.1999
- Carnegie Stages: 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | About Stages | Timeline
Image source: The Kyoto Collection images are reproduced with the permission of Prof. Kohei Shiota and Prof. Shigehito Yamada, Anatomy and Developmental Biology, Kyoto University Graduate School of Medicine, Kyoto, Japan for educational purposes only and cannot be reproduced electronically or in writing without permission.
Cite this page: Hill, M.A. (2024, June 14) Embryology Carnegie stage 23. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/Carnegie_stage_23
- © Dr Mark Hill 2024, UNSW Embryology ISBN: 978 0 7334 2609 4 - UNSW CRICOS Provider Code No. 00098G